Spring draft-gear.



J. F. OCONNOR.

SPRING DRAFT GEAR. APPLICATION FILED OCT-23.1914.

Patented July 25, 1916.

INVENTOR. John/11 96 0222207 2 SHEETS-SHEET l.

WITNESSES BY J @ATTORNE s rnr are.

JOHN F. OCONNOB, OF CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM H. MINER, OFGHAZY, NEW YORK.

SPRING DRAFT-GEAR.

Specification of Letters Patent.

Patented July 25, 1916..

To all whom it may concern:

Be it known that I, JOHN F. OCoNNoR, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Spring Draft-Gears, ofwhich the following is a full, clear, concise, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

This invention relates to improvements in spring draft gears.

An object of the invention is to provide a spring draft gear of simpleconstruction, few parts which may be readily assembled and disassembled,and in which the necessity of stop castings is eliminated.

The invention furthermore consists in the improvements in the parts anddevices and in the novel combinations of the parts and devices as hereinshown, described or claimed.

In the drawing forming a part of this specification, Figure 1 is alongitudinal central vertical sectional view of a draft rigging, showingone embodiment of my invention. Fig. 2 is a horizontal sectional viewtaken substantially on the line 22 of Fig. 1 and Figs. 3 and 4: arevertical sectional views taken substantially on the lines 33 and l4respectively of Fig. 1.

In said drawing, 1010 denote the center sills which are in the form ofchannels having their flanges outwardly turned, said sills beingprovided with slots 11 at one portion and elongated slots 12 in frontthereof, the latter slots being adapted to receive a conpler key 13therethrough and the slots 11 receiving a stationary transverselyextending key 14. The gear proper comprises an outer casing 15 which, asshown, is substantially square in cross section and provided withforwardly extended side arms 16, each of which has an elongated slot 17in which reciprocates the coupler key 13, said key 13 also passingthrough a slot provided in the rear end of the draw bar 18. The casing15 is also provided with elongated slots 19 at the rear thereof, so thatthe casing 15 may slide back and forth on the stationary key 14:. Therear end of the casing 15 is closed by the wall 20.

Telescoped within the casing 15, is another casing 21 also ofsubstantially rectangular cross section and having a closed to slideback and forth on the key 141, the

rear of the follower 25 engaging the rear wall 20.

The operation of the device is as follows z-Upon forward movement of thedraw bar, the casing 15 is pulled forwardly by the coupler key 13 whichthus causes a forward movement of the follower 25, thereby compressingthe springs 24 between the follower 25 and the front wall 22 of theinner casing 21, the latter being held stationary by the key 14. Uponbuffing movement the draw bar engages the inner casing 21 and forces thesame rearwardly, thus compressing the springs between the front wall 22and the follower 25, the latter being prevented from rearward movementby the rear wall 20 of the casing 15 which is held by the key 14:.

1. In a railway draft rigging, the combination with draft sills, of astationary key mounted in said sills, a drawbar, two casings, onetelescoped within the other and both of which are slidable with respectto said key, one forwardly only and the other rearwardly only,cushioning means mounted within said casings, and a coupler keyconnecting one of said casings with said drawbar, said coupler key beingslidable with respect to said casing.

2. In a railway draft rigging, the combination with draft members, of astationary key mounted in slots in said draft members, a casing slidablymounted on said stationary key, said casing being provided with armsextended forwardly of the key and also with portions thereof extendingrearwardly of the key, said forwardly extended arms being slotted andadapted to be connected to adrawbar by a coupler key, a second casingtelescoped within the first named casing and sliclable rearwardly withrespect to said stationary key, said casing being adapted to have itsfront end engaged by the butt end i of the drawbar under buff, andcushioning means within said casings. v V

3. In a draft rigging for railway cars, the combination with draftsills, of a stationary key in said sills, two telescoped casingsslidably mounted on' said key, each of said casings having a'closed end,said closed ends being oppositely disposed, a follower separate fromeither casing and slidably mounted on said key and engaging the closedend of one of said casings, springs mounted'within said casings andbetween said follower and the closed end of the other casing, and meansfor connecting one of said casings to the draw bar.

4. In a draft rigging for railway cars, the combination with draftsills, of a horizontal stationary key mounted between said sills,two'telescoped casings, the outer of said casings being closed at itsrear end and the inner at its front end, both of said casings havinglongitudinally extending slots and thereby slidably mounted on said key,the outer casing being provided with forwardly extended side armsslotted to receive a coupler key, a draw bar, a coupler key extendedthrough said draw bar and the slotted arms of said outer casing, therear end of said draw bar engaging the front end of the inner casing,and a spring mounted within .end thereof and said follower, and meansfor connecting the outer casing with a draw bar. a

' JOHN F. OCONNOR.

WVitnesses:

CARRIE G. RANZ, LUOILLE HIGGINS.

Copies of this patent may be obtained for five centseac h, by addressingthe Commissioner of Patents, Washington, D. C.

